The Bethe ansatz method and an iterative procedure based on detailed balance are used to obtain exact results for an asymmetric avalanche process on a ring. The average velocity of particle flow, v, is derived as a function of the toppling probabilities and the density of particles, rho. As rho increases, the system shows a transition from intermittent to continuous flow, and v diverges at a cr...

Abstract Toppling rock slopes, induced by rapid and continuous downcutting of Lancang River, are widely distributed in the mountainous area southwest China. To investigate instability mechanism 1# toppling slope Huangdeng Hydropower Station under seismic loading, particle flow code (PFC) is applied to simulate dynamic response failure mode. The study considers characteristics displacement, velo...

The phenomenon of toppling deformation and failure is common in slopes with anti-dip structures, especially soft metamorphic rock slopes. This paper aims to explore the instability mechanism layered landslides. Taking slope a mining area southern Qinling Mountains China as geological prototype, large-scale centrifuge model test numerical simulation based on combined finite discrete element meth...

abstract statement of problem: mechanical strength and durability of dental composites are the main topics studied in this field of science today. this study examined fumed silica-based composite as a strong and durable restorative material through flexural and cycling test methods.     objectives: the purpose of this study was to evaluate the effect of silanization, ageing, cycling and hybridi...

Abstract This study investigated the optimal water/binder (w/b) and aggregate/binder (a/b) ratios in producing a concrete paving block. The w/b a/b block were optimised using response surface methodology (RSM), considering performances of ultrasonic pulse velocity (UPV), flexural, compressive strengths. Regression modelling was conducted to represent relationships between UPV strength flexural ...

We study a two-person game played on graphs based on the widely studied chip-firing game. Players Max and Min alternately place chips on the vertices of a graph. When a vertex accumulates as many chips as its degree, it fires, sending one chip to each neighbour; this may in turn cause other vertices to fire. The game ends when vertices continue firing forever. Min seeks to minimize the number o...

Damage from a dormant-season windstorm in a 3-year-old Populus research trial differed among four clones and three spacings and between monoclonal and polyclonal plots. Clonal differences in susceptibility to toppling (or leaning) were associated with both above-and below-ground characteristics. Susceptible clones had less taper in the lower stem and more weight in branches on the upper stem. T...